:root {
  color-scheme: light;
  --bg: #f4efe6;
  --bg-warm: #ebe4d8;
  --panel: #fffcf7;
  --ink: #1c1814;
  --muted: #6e645a;
  --border: rgba(28, 24, 20, 0.1);
  --accent: #c45c72;
  --accent-soft: #f3d4dc;
  --accent-deep: #8f3d52;
  --teal: #2f5f5a;
  --shadow: 0 18px 50px rgba(28, 24, 20, 0.08);
  --radius: 18px;
  --font-display: "Songti SC", "Noto Serif SC", STSong, Georgia, serif;
  --font-body: "Songti SC", "Noto Serif SC", STSong, Georgia, serif;
  --font-ui: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", sans-serif;
}

html.fonts-google {
  --font-display: "Fraunces", "Noto Serif SC", Georgia, serif;
  --font-body: "Newsreader", "Noto Serif SC", Georgia, serif;
  --font-ui: "IBM Plex Sans", "PingFang SC", sans-serif;
}

html.fonts-google .title {
  font-variation-settings: "SOFT" 50, "WONK" 1;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.65;
  color: var(--ink);
  background: var(--bg);
  padding-left: env(safe-area-inset-left);
  padding-right: env(safe-area-inset-right);
  padding-bottom: env(safe-area-inset-bottom);
  background-image:
    radial-gradient(ellipse 80% 50% at 10% -10%, rgba(196, 92, 114, 0.12), transparent 55%),
    radial-gradient(ellipse 60% 40% at 95% 5%, rgba(47, 95, 90, 0.1), transparent 50%),
    url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.04'/%3E%3C/svg%3E");
}

.shell {
  width: min(1120px, calc(100% - 2.5rem));
  margin: 0 auto;
  padding: 2.5rem 0 4rem;
}

/* ── Header ── */
.channel-nav-wrap {
  position: relative;
  margin-bottom: 1.5rem;
  padding-bottom: 1.25rem;
  border-bottom: 1px solid var(--border);
}

.channel-nav-wrap::before,
.channel-nav-wrap::after {
  content: "";
  position: absolute;
  top: 0;
  bottom: 1.25rem;
  width: 1.75rem;
  pointer-events: none;
  z-index: 1;
  opacity: 0;
  transition: opacity 0.2s;
}

.channel-nav-wrap::before {
  left: 0;
  background: linear-gradient(to right, var(--panel) 15%, transparent);
}

.channel-nav-wrap::after {
  right: 0;
  background: linear-gradient(to left, var(--panel) 15%, transparent);
}

.channel-nav-wrap.can-scroll-left::before,
.channel-nav-wrap.can-scroll-right::after {
  opacity: 1;
}

.channel-nav {
  display: flex;
  flex-wrap: nowrap;
  gap: 0.5rem;
  overflow-x: auto;
  overflow-y: hidden;
  -webkit-overflow-scrolling: touch;
  scroll-snap-type: x proximity;
  scroll-behavior: smooth;
  scrollbar-width: none;
  padding: 0.15rem 0.1rem;
  margin: 0 -0.1rem;
}

.channel-nav::-webkit-scrollbar {
  display: none;
}

.channel-tab {
  appearance: none;
  border: 1px solid var(--border);
  background: var(--bg-warm);
  border-radius: 12px;
  padding: 0.55rem 0.9rem;
  cursor: pointer;
  text-align: left;
  transition: transform 0.2s, box-shadow 0.2s, border-color 0.2s, background 0.2s;
  flex: 0 0 auto;
  min-width: 9.5rem;
  max-width: 12.5rem;
  scroll-snap-align: start;
}

.channel-tab:hover {
  transform: translateY(-1px);
  box-shadow: 0 6px 18px rgba(28, 24, 20, 0.06);
}

.channel-tab.is-active {
  background: var(--panel);
  border-color: var(--accent);
  box-shadow: 0 8px 24px rgba(196, 92, 114, 0.12);
}

.channel-tab-title {
  display: block;
  font-family: var(--font-ui);
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--ink);
  line-height: 1.3;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.channel-tab-id {
  display: block;
  font-family: var(--font-ui);
  font-size: 0.68rem;
  color: var(--muted);
  margin-top: 0.15rem;
}

.masthead {
  position: relative;
  padding: 2.5rem 2rem 2rem;
  margin-bottom: 2.5rem;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: calc(var(--radius) + 6px);
  box-shadow: var(--shadow);
  overflow: hidden;
  animation: rise 0.7s cubic-bezier(0.22, 1, 0.36, 1) both;
}

.masthead::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(135deg, transparent 60%, rgba(196, 92, 114, 0.06)),
    repeating-linear-gradient(
      -12deg,
      transparent,
      transparent 28px,
      rgba(28, 24, 20, 0.025) 28px,
      rgba(28, 24, 20, 0.025) 29px
    );
  pointer-events: none;
}

.masthead-inner {
  position: relative;
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 1.5rem;
  align-items: end;
}

.eyebrow {
  font-family: var(--font-ui);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--teal);
  margin: 0 0 0.6rem;
}

.title {
  font-family: var(--font-display);
  font-size: clamp(2rem, 5vw, 3.1rem);
  font-weight: 600;
  line-height: 1.1;
  margin: 0;
  letter-spacing: -0.02em;
}

.subtitle {
  margin: 0.75rem 0 0;
  color: var(--muted);
  font-size: 1.05rem;
  max-width: 36ch;
}

.btn-font {
  font-family: var(--font-ui);
}

.btn-font.is-google {
  border-color: rgba(196, 92, 114, 0.28);
  background: rgba(243, 212, 220, 0.45);
}

.toolbar {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  justify-content: flex-end;
  align-items: center;
}

.btn {
  appearance: none;
  border: 1px solid var(--border);
  background: var(--panel);
  color: var(--ink);
  font-family: var(--font-ui);
  font-size: 0.82rem;
  font-weight: 500;
  padding: 0.55rem 1rem;
  border-radius: 999px;
  cursor: pointer;
  transition: transform 0.2s, box-shadow 0.2s, border-color 0.2s;
}

.btn:hover {
  transform: translateY(-1px);
  box-shadow: 0 6px 20px rgba(28, 24, 20, 0.08);
  border-color: rgba(28, 24, 20, 0.18);
}

.btn-primary {
  background: var(--accent);
  border-color: var(--accent-deep);
  color: #fff;
}

.btn-primary:hover {
  background: var(--accent-deep);
}

.sync-meta {
  font-family: var(--font-ui);
  font-size: 0.75rem;
  color: var(--muted);
  text-align: right;
  width: 100%;
}

/* ── Feed grid ── */
.feed {
  display: grid;
  gap: 1.25rem;
  width: 100%;
  max-width: 100%;
  min-width: 0;
}

.card {
  --delay: 0ms;
  position: relative;
  width: 100%;
  max-width: 100%;
  min-width: 0;
  overflow-wrap: anywhere;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem 1.6rem 1.3rem;
  box-shadow: 0 8px 30px rgba(28, 24, 20, 0.05);
  animation: rise 0.65s cubic-bezier(0.22, 1, 0.36, 1) both;
  animation-delay: var(--delay);
  transition: transform 0.25s, box-shadow 0.25s;
}

.card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow);
}

.card::after {
  content: "";
  position: absolute;
  left: 0;
  top: 1.2rem;
  bottom: 1.2rem;
  width: 3px;
  border-radius: 0 3px 3px 0;
  background: linear-gradient(180deg, var(--accent), var(--teal));
  opacity: 0;
  transition: opacity 0.25s;
}

.card:hover::after {
  opacity: 1;
}

.card-head {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 1rem;
  margin-bottom: 0.85rem;
}

.card-title {
  font-family: var(--font-display);
  font-size: 1.28rem;
  font-weight: 600;
  line-height: 1.35;
  margin: 0;
  letter-spacing: -0.01em;
}

.card-time {
  flex-shrink: 0;
  font-family: var(--font-ui);
  font-size: 0.72rem;
  color: var(--muted);
  background: var(--bg-warm);
  padding: 0.3rem 0.65rem;
  border-radius: 999px;
  white-space: nowrap;
}

.card-body {
  margin: 0;
  color: var(--ink);
  white-space: pre-wrap;
  word-break: break-word;
}

.text-link {
  color: var(--teal);
  text-decoration: underline;
  text-underline-offset: 2px;
  word-break: break-all;
}

.text-link:hover {
  color: var(--accent-deep);
}

.card-highlight {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.card-body.collapsed {
  display: -webkit-box;
  -webkit-line-clamp: 18;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.card-media {
  margin: 1rem 0 0.5rem;
}

.card-image {
  display: block;
  width: 100%;
  max-height: 420px;
  object-fit: contain;
  border-radius: 12px;
  border: 1px solid var(--border);
  background: var(--bg-warm);
  cursor: zoom-in;
  transition: transform 0.2s, box-shadow 0.2s;
}

.card-image:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.card-image:hover {
  box-shadow: 0 8px 24px rgba(28, 24, 20, 0.12);
}

.card-gallery {
  display: grid;
  gap: 0.5rem;
  margin: 1rem 0 0.5rem;
  grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
}

.card-gallery[data-count="2"] {
  grid-template-columns: 1fr 1fr;
}

.card-gallery[data-count="3"] {
  grid-template-columns: 1fr 1fr;
}

.card-gallery .card-image {
  max-height: 220px;
  object-fit: cover;
}

.card-media.is-broken .card-image {
  min-height: 120px;
  object-fit: none;
  opacity: 0.35;
}

.card-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin-top: 1rem;
}

.tag {
  font-family: var(--font-ui);
  font-size: 0.7rem;
  padding: 0.25rem 0.6rem;
  border-radius: 6px;
  background: var(--accent-soft);
  color: var(--accent-deep);
}

.tag-poll {
  background: rgba(47, 95, 90, 0.12);
  color: var(--teal);
}

.card-views {
  margin: 0.65rem 0 0;
  font-family: var(--font-ui);
  font-size: 0.72rem;
  color: var(--muted);
}

.reactions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
  margin-top: 1rem;
  padding-top: 0.85rem;
  border-top: 1px dashed var(--border);
}

.reaction {
  font-family: var(--font-ui);
  font-size: 0.75rem;
  padding: 0.2rem 0.55rem;
  border-radius: 999px;
  background: var(--bg);
  border: 1px solid var(--border);
}

.card-foot {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 0.75rem;
  margin-top: 0.9rem;
}

.card-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
  align-items: center;
}

.comments-btn {
  font-family: var(--font-ui);
  font-size: 0.78rem;
  font-weight: 500;
  color: var(--accent-deep);
  background: var(--accent-soft);
  border: 1px solid rgba(196, 92, 114, 0.25);
  border-radius: 999px;
  padding: 0.35rem 0.85rem;
  cursor: pointer;
  transition: background 0.2s, transform 0.2s;
}

.comments-btn:hover {
  background: #f8e0e7;
  transform: translateY(-1px);
}

.comments-btn[aria-expanded="true"] {
  background: var(--teal);
  color: #fff;
  border-color: var(--teal);
}

.comments-panel {
  margin-top: 1rem;
  padding: 1rem 0.25rem 0.5rem;
  border-top: 1px dashed var(--border);
  max-width: 100%;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.comments-panel iframe {
  display: block;
  width: 100% !important;
  max-width: 100% !important;
  min-width: 0;
  border-radius: 12px;
  border: 1px solid var(--border);
}

.comments-loading,
.comments-fallback {
  font-family: var(--font-ui);
  font-size: 0.82rem;
  color: var(--muted);
  margin: 0.5rem 0;
}

.comments-fallback a {
  color: var(--teal);
}

.load-more-wrap {
  text-align: center;
  margin: 0.5rem 0 3rem;
  padding: 0 0.5rem;
  width: 100%;
  max-width: 100%;
}

.load-more-btn {
  min-width: 200px;
  max-width: 100%;
  padding: 0.75rem 1.5rem;
  font-size: 0.9rem;
}

.load-more-meta {
  margin: 0.75rem auto 0;
  max-width: 36rem;
  padding: 0 0.25rem;
  font-family: var(--font-ui);
  font-size: 0.75rem;
  line-height: 1.55;
  color: var(--muted);
  word-break: break-word;
  overflow-wrap: anywhere;
}

.card-video {
  position: relative;
}

.card-video-player {
  display: block;
  width: 100%;
  max-height: 480px;
  border-radius: 12px;
  border: 1px solid var(--border);
  background: #111;
}

.card-video-fallback .video-hint {
  font-family: var(--font-ui);
  font-size: 0.78rem;
  color: var(--muted);
  margin: 0.5rem 0 0;
  text-align: center;
}

.tag-video {
  background: rgba(28, 24, 20, 0.08);
  color: var(--ink);
}

.card-link {
  font-family: var(--font-ui);
  font-size: 0.78rem;
  font-weight: 500;
  color: var(--teal);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color 0.2s;
}

.card-link:hover {
  border-bottom-color: var(--teal);
}

.expand-btn {
  font-family: var(--font-ui);
  font-size: 0.75rem;
  color: var(--muted);
  background: none;
  border: none;
  cursor: pointer;
  padding: 0;
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ── States ── */
.status {
  text-align: center;
  padding: 4rem 1rem;
  color: var(--muted);
  font-family: var(--font-ui);
}

.status.error {
  color: var(--accent-deep);
}

.loader {
  width: 36px;
  height: 36px;
  margin: 0 auto 1rem;
  border: 3px solid var(--accent-soft);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

.footer {
  margin-top: 2rem;
  padding: 0 0.5rem 1rem;
  text-align: center;
  font-family: var(--font-ui);
  font-size: 0.78rem;
  color: var(--muted);
  width: 100%;
  max-width: 100%;
}

.footer-channels,
.footer-note {
  margin: 0;
  line-height: 1.65;
  word-break: break-word;
  overflow-wrap: anywhere;
}

.footer-note {
  margin-top: 0.45rem;
  font-size: 0.72rem;
  opacity: 0.9;
}

.footer a {
  color: var(--accent-deep);
}

@keyframes rise {
  from {
    opacity: 0;
    transform: translateY(18px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

@media (max-width: 1024px) {
  .shell {
    width: min(1120px, calc(100% - 2rem));
    padding: 1.75rem 0 3rem;
  }

  .masthead {
    padding: 1.75rem 1.5rem 1.5rem;
    margin-bottom: 2rem;
  }

  .channel-nav-wrap {
    margin-bottom: 1rem;
    padding-bottom: 0.85rem;
  }

  .load-more-wrap {
    padding: 0 0.25rem;
    margin-bottom: 2.5rem;
  }

  .load-more-meta {
    font-size: 0.72rem;
    max-width: none;
  }

  .footer {
    margin-top: 1.5rem;
    padding-bottom: 0.5rem;
  }
}

@media (max-width: 720px) {
  .shell {
    width: calc(100% - 1.25rem);
    padding: 1rem 0 2.5rem;
  }

  body {
    font-size: 16px;
  }

  .channel-tab {
    min-width: 8.75rem;
    max-width: 10.5rem;
    padding: 0.65rem 0.85rem;
  }

  .masthead {
    padding: 1.25rem 1rem 1.1rem;
    margin-bottom: 1.5rem;
    border-radius: var(--radius);
  }

  .masthead-inner {
    grid-template-columns: 1fr;
    gap: 1rem;
  }

  .title {
    font-size: clamp(1.65rem, 8vw, 2.2rem);
  }

  .subtitle {
    font-size: 0.95rem;
    max-width: none;
  }

  .toolbar {
    justify-content: stretch;
    flex-direction: column;
    align-items: stretch;
  }

  .btn {
    width: 100%;
    text-align: center;
    padding: 0.7rem 1rem;
    font-size: 0.88rem;
  }

  .sync-meta {
    text-align: left;
    font-size: 0.72rem;
    line-height: 1.5;
  }

  .feed {
    gap: 1rem;
  }

  .card {
    padding: 1.1rem 1rem 1rem;
    border-radius: 14px;
  }

  .card-head {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.45rem;
  }

  .card-title {
    font-size: 1.12rem;
  }

  .card-time {
    font-size: 0.7rem;
  }

  .card-image {
    max-height: 280px;
  }

  .card-gallery {
    grid-template-columns: 1fr 1fr;
  }

  .card-gallery .card-image {
    max-height: 160px;
  }

  .card-video-player {
    max-height: 240px;
  }

  .card-foot {
    flex-direction: column;
    align-items: stretch;
    gap: 0.65rem;
  }

  .card-actions {
    flex-direction: column;
    align-items: stretch;
  }

  .card-link,
  .comments-btn {
    display: block;
    text-align: center;
    width: 100%;
    padding: 0.55rem 0.85rem;
  }

  .expand-btn {
    align-self: flex-start;
    padding: 0.35rem 0;
  }

  .comments-panel iframe {
    min-height: 120px;
  }

  .load-more-wrap {
    margin: 0.25rem 0 1.75rem;
    padding: 0;
  }

  .load-more-btn {
    width: 100%;
    min-width: 0;
  }

  .load-more-meta {
    font-size: 0.68rem;
    line-height: 1.5;
    padding: 0 0.15rem;
  }

  .footer {
    font-size: 0.68rem;
    line-height: 1.55;
    padding: 0 0.15rem 0.75rem;
    margin-top: 1.25rem;
  }

  .footer-channels {
    font-size: 0.68rem;
  }

  .footer-note {
    font-size: 0.64rem;
  }
}

/* ── Digest panel ── */
.digest-panel {
  margin-bottom: 1.75rem;
  padding: 1.35rem 1.5rem;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.digest-inner {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.digest-head {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1rem;
}

.digest-title {
  margin: 0;
  font-family: var(--font-display);
  font-size: 1.35rem;
  font-weight: 600;
}

.digest-sub {
  margin: 0.35rem 0 0;
  font-family: var(--font-ui);
  font-size: 0.82rem;
  color: var(--muted);
}

.digest-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.digest-topics {
  margin: 0;
  padding: 0.75rem 1rem;
  list-style: none;
  background: var(--bg-warm);
  border-radius: 12px;
  font-family: var(--font-ui);
  font-size: 0.85rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1.25rem;
}

.digest-topics li::before {
  content: "▸ ";
  color: var(--accent);
}

.digest-muted {
  color: var(--muted);
}

.digest-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1rem;
}

.digest-card {
  padding: 1rem 1.1rem;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 14px;
}

.digest-card-head {
  display: flex;
  align-items: flex-start;
  gap: 0.5rem;
  margin-bottom: 0.5rem;
}

.digest-rank {
  flex-shrink: 0;
  font-family: var(--font-ui);
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--accent-deep);
  background: var(--accent-soft);
  padding: 0.15rem 0.45rem;
  border-radius: 6px;
}

.digest-card-title {
  flex: 1;
  margin: 0;
  font-family: var(--font-display);
  font-size: 0.98rem;
  font-weight: 600;
  line-height: 1.35;
}

.digest-score {
  flex-shrink: 0;
  font-family: var(--font-ui);
  font-size: 0.68rem;
  color: var(--muted);
}

.digest-author {
  margin: 0 0 0.35rem;
  font-family: var(--font-ui);
  font-size: 0.75rem;
  color: var(--teal);
}

.digest-hint {
  margin: 0;
  font-size: 0.88rem;
  line-height: 1.55;
  color: var(--ink);
}

.digest-details {
  margin-top: 0.6rem;
  font-family: var(--font-ui);
  font-size: 0.78rem;
}

.digest-details summary {
  cursor: pointer;
  color: var(--accent-deep);
}

.digest-raw {
  margin: 0.5rem 0 0;
  font-size: 0.82rem;
  line-height: 1.5;
  white-space: pre-wrap;
  color: var(--muted);
}

.digest-card-foot {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 0.75rem;
  padding-top: 0.6rem;
  border-top: 1px solid var(--border);
  font-family: var(--font-ui);
  font-size: 0.72rem;
  color: var(--muted);
}

.digest-card-foot a {
  color: var(--accent-deep);
  text-decoration: none;
}

.digest-card-foot a:hover {
  text-decoration: underline;
}

/* ── Lightbox ── */
body.lightbox-open {
  overflow: hidden;
}

.lightbox {
  position: fixed;
  inset: 0;
  z-index: 1000;
  display: flex;
  align-items: stretch;
  justify-content: center;
}

.lightbox[hidden] {
  display: none !important;
}

.lightbox-backdrop {
  position: absolute;
  inset: 0;
  border: none;
  background: rgba(8, 7, 6, 0.92);
  cursor: zoom-out;
}

.lightbox-dialog {
  position: relative;
  z-index: 1;
  width: 100%;
  height: 100%;
  max-height: 100dvh;
  display: grid;
  grid-template-rows: 1fr auto;
  box-sizing: border-box;
  padding:
    max(0.5rem, env(safe-area-inset-top))
    max(0.35rem, env(safe-area-inset-right))
    max(0.5rem, env(safe-area-inset-bottom))
    max(0.35rem, env(safe-area-inset-left));
}

.lightbox-stage {
  margin: 0;
  min-height: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  padding: 2.75rem 0.25rem 0.35rem;
  touch-action: pan-y pinch-zoom;
}

.lightbox-img {
  display: block;
  width: auto;
  height: auto;
  max-width: min(100%, calc(100vw - 1rem));
  max-height: min(100%, calc(100dvh - 10.5rem));
  object-fit: contain;
  border-radius: 8px;
  background: #111;
  box-shadow: 0 16px 48px rgba(0, 0, 0, 0.45);
  user-select: none;
  -webkit-user-drag: none;
}

.lightbox-btn {
  position: absolute;
  z-index: 2;
  top: 50%;
  transform: translateY(-50%);
  width: 2.85rem;
  height: 2.85rem;
  border: none;
  border-radius: 999px;
  background: rgba(255, 252, 247, 0.94);
  color: var(--ink);
  font-size: 1.65rem;
  line-height: 1;
  cursor: pointer;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.25);
  transition: opacity 0.2s, transform 0.2s;
}

.lightbox-btn:disabled {
  opacity: 0.3;
  cursor: not-allowed;
}

.lightbox-btn:not(:disabled):hover {
  transform: translateY(-50%) scale(1.05);
}

.lightbox-btn.is-loading::after {
  content: "";
  position: absolute;
  inset: 0.55rem;
  border: 2px solid rgba(28, 24, 20, 0.15);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
}

.lightbox-btn.is-loading {
  color: transparent;
}

.lightbox-close {
  top: max(0.35rem, env(safe-area-inset-top));
  right: max(0.35rem, env(safe-area-inset-right));
  transform: none;
  font-size: 1.45rem;
}

.lightbox-close:hover {
  transform: scale(1.05);
}

.lightbox-prev {
  left: max(0.25rem, env(safe-area-inset-left));
}

.lightbox-next {
  right: max(0.25rem, env(safe-area-inset-right));
}

.lightbox-toolbar {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  justify-content: space-between;
  gap: 0.65rem;
  padding: 0.65rem 0.35rem 0.15rem;
  background: linear-gradient(to top, rgba(8, 7, 6, 0.88), transparent);
}

.lightbox-meta {
  flex: 1 1 12rem;
  min-width: 0;
}

.lightbox-counter {
  display: block;
  font-family: var(--font-ui);
  font-size: 0.84rem;
  font-weight: 600;
  color: rgba(255, 252, 247, 0.92);
}

.lightbox-caption {
  margin: 0.2rem 0 0;
  font-family: var(--font-ui);
  font-size: 0.74rem;
  color: rgba(255, 252, 247, 0.72);
  word-break: break-word;
}

.lightbox-caption a {
  color: #f3d4dc;
  text-decoration: underline;
  text-underline-offset: 2px;
}

.lightbox-hint {
  margin: 0.35rem 0 0;
  font-family: var(--font-ui);
  font-size: 0.68rem;
  color: rgba(255, 252, 247, 0.55);
}

.lightbox-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  flex-shrink: 0;
}

.lightbox-save,
.lightbox-open {
  font-size: 0.76rem;
  padding: 0.5rem 0.85rem;
  text-decoration: none;
  white-space: nowrap;
}

.lightbox-open {
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

@media (min-width: 721px) {
  .lightbox-stage {
    padding: 3rem 3.5rem 0.5rem;
  }

  .lightbox-img {
    max-width: min(96vw, 1200px);
    max-height: calc(100dvh - 9rem);
  }

  .lightbox-prev {
    left: 0.75rem;
  }

  .lightbox-next {
    right: 0.75rem;
  }
}

@media (max-width: 720px) {
  .lightbox-stage {
    padding: 2.5rem 0.15rem 0.25rem;
  }

  .lightbox-img {
    max-width: 100%;
    max-height: calc(100dvh - 11.5rem);
    border-radius: 6px;
  }

  .lightbox-btn {
    width: 2.5rem;
    height: 2.5rem;
    font-size: 1.4rem;
  }

  .lightbox-toolbar {
    flex-direction: column;
    align-items: stretch;
    gap: 0.55rem;
  }

  .lightbox-actions {
    width: 100%;
  }

  .lightbox-save,
  .lightbox-open {
    flex: 1;
    text-align: center;
    justify-content: center;
  }
}

@media (max-width: 380px) {
  .lightbox-prev,
  .lightbox-next {
    top: auto;
    bottom: calc(5.5rem + env(safe-area-inset-bottom));
    transform: none;
  }

  .lightbox-prev {
    left: 18%;
  }

  .lightbox-next {
    right: 18%;
  }

  .lightbox-btn:not(:disabled):hover {
    transform: scale(1.05);
  }
}

@media (max-width: 380px) {
  .shell {
    width: calc(100% - 0.85rem);
  }

  .channel-tab {
    min-width: 8.5rem;
  }

  .card-gallery {
    grid-template-columns: 1fr;
  }
}

/* ── Auth gate ── */
body.auth-locked {
  overflow: hidden;
}

.auth-gate {
  position: fixed;
  inset: 0;
  z-index: 2000;
  display: none;
  place-items: center;
  padding: 1.5rem;
  background:
    radial-gradient(ellipse 70% 55% at 50% 0%, rgba(196, 92, 114, 0.18), transparent 60%),
    rgba(28, 24, 20, 0.42);
  backdrop-filter: blur(10px);
}

.auth-gate.is-open {
  display: grid;
}

.auth-gate[hidden] {
  display: none !important;
}

#app-shell[hidden] {
  display: none !important;
}

.auth-card {
  width: min(420px, 100%);
  padding: 2rem 1.75rem 1.75rem;
  border-radius: calc(var(--radius) + 4px);
  border: 1px solid var(--border);
  background: var(--panel);
  box-shadow: var(--shadow);
}

.auth-title {
  margin: 0.35rem 0 0.5rem;
  font-family: var(--font-display);
  font-size: clamp(1.6rem, 4vw, 2rem);
  font-weight: 600;
  line-height: 1.2;
}

.auth-lead {
  margin: 0 0 1.25rem;
  color: var(--muted);
  font-family: var(--font-ui);
  font-size: 0.95rem;
}

.auth-form {
  display: grid;
  gap: 0.65rem;
}

.auth-label {
  font-family: var(--font-ui);
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--muted);
}

.auth-input {
  width: 100%;
  padding: 0.85rem 1rem;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: #fff;
  color: var(--ink);
  font-family: var(--font-ui);
  font-size: 1rem;
}

.auth-input:focus {
  outline: 2px solid rgba(196, 92, 114, 0.35);
  border-color: var(--accent);
}

.auth-error {
  margin: 0;
  color: var(--accent-deep);
  font-family: var(--font-ui);
  font-size: 0.9rem;
}

.auth-submit {
  margin-top: 0.35rem;
  width: 100%;
}